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4(No Model.)

W. H. .HAIER v RATGHET WRE NCH.

No. 449,476. Patented Mar. 31,1891.

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VILLAM, ll. HARELIOF MORRISTOVN, TENNESSEE, ASSIGNOR OF ONE-HALF TO GEORGE K. TURNER, OF SAME PLAGE.

RATCHET-WRENCH.

SPECIFICATION forming part of Letters Patent No. 449,476, dated March 31, 1891.

Application filed December 18, 189m Serial No. 375,069. (No model.)

To aZZ whom t may concern.-

Be it known that I, WILLIAM ll. Harlin, of Morristown, in the county of Hamblen and State of Tennessee, have invented a new and usefullmprovement in Ratchet-Wrenches, of which the following is a full, clear, and exact description. j 1

My invention relates to ratchet-wrenches, and has for its object to simplify the conio struction of such articles and provide an economic and durable tool capable of use in any manner in which an ordinary wrench maybe employed and possessing the advantage of being conveniently manipulated right or left in exceedingly limited spaces.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

2o Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar iigures of reference indicate corresponding parts in all the views.

' Figure lisa partial plan and horizontal 2 5 sectional View of the tool. Fig. 2 is a vertical section taken on the line 2 2 of Fig. l. Fig.

3 is an end View of the head of the wrench;

and Fig. et is a bottom plan view of the adjustable jaw.

The head of the wrench A comprises praetically a fixed jaw l0 and an adjustable jaw 11. The fixed jaw l0 consists of a horizontal block member a, which lnay be in the shape of a disk or of an oval or other contour, and 3 5 a clamping member d', the inner face whereof is straight, though it may be serrated or roughened if in practice it be found desirable. the horizontal block member o, at its outer end, an undercut recess l2 is produced, which 4o extends almost to the opposite end and through the under face, forming thereby a slideway, as is best illustrated in Figs. 2 and 3, the recess being more or less T-shaped in cross-section. The adjustable jaw consists of a horizontal block member b, essentially T- shaped in cross-section, as shown in Fig. 3, and of suitable size to slide in the recess l2 of the fixed jaw, and from the block member l) oi' the jaw ll a clamping member b is down- 5o wardly projected, having a smooth or a serrated inner face. The adjustment of the jaw 1l. is-effected through the medium of a Screw 13, which screw is heldand turns freely 1n an 4aperture ll, produced in the end of the block-section of the fixed jaw facing the han- 55 die, and the threaded portion of the screw is made to entera threaded horizontal aperture extending through the block-section of the movable jaw from end to end thereof. A post or stud l5 is attached to or formed integral 6o with the upper surface of the block-section of the stationary jaw, and around the stud or post the outer end of a handle B, which may be of any approved construction, is held to freely turn. To that end the handle is provided with an opening, throughV which the stud or post l5 passes. Upon the upper end of thepost a cap-block 1G is rigidly secured, preferably through the medium of a set-screw 17,

as is best shown in Fig. 2, the said cap-block 7o being adapted to almost engage at its under face with the upper face of the handle, and around the periphery of the lower portion of the capblock a series of teeth 18 is produced,

as is best shown in Figsl and The outer end of the handle adjacent to the head is fiattened to such an extent as to provide a shoulder 19, and in this shoulder a bore is produced, in which a spring-pressed bolt 20 is held to slide, and the head of the bolt is 8o adapted to normally engage with either one side face or the other of an essentially triangular dog 2l, pivoted upon the upper face of the handle between the shoulder and the toothed face of the cap-block. The edge of the dog facing the cap-block is preferably concaved at its center, as illustrated at d in Fig. l, and is also provided with a concaved surface d. at each end, whereby spurs 22 are formed, adapted to enter the spaces between the teeth and engage therewith.

In operation the jaws are fitted to clamp any size of nut or other object by n1anipulating the screw 13, which carries the jaw 11 toward or from the jaw 10. The wrench may now be manipulated to turn the nut or other object clamped thereby either to the right or to the left by causing one or the other of the spurs of 22 the dog to engage with the toothed surface of the cap-block. Then the handle roo is carried in one direction, the dog will force the cap-block to revolve', which in turn will rotate thejaws; butwhen the handleis moved in the opposite' direction the dog slips over the teeth and has no action thereon. The dog is held in either one of its two positions by the boit 20, and these positions may be readily changed, as the head of the bolt is conical, which permits the apex or point of the dog to readily pass it when being shifted.

I-Iavin g thus described my invention, I clai n1 as new and desire to secure by Letters Patentl. In a ratchet-wrench, the combination, with a stationary jaw, a movable opposed jaw, an adjusting-screw held to turn in the fixed jaw and fitted to a threaded opening in the movable jaw, and a stud projected upward from the fixed jaw, of a handle held to revolve around the stud, a cap-block secured to the upper end of the stud and provided with a toothed periphery, and a spring-pressed dog pivoted upon the handle provided with two spurs adapted for engagement with the toothed periphery of the cap-block, as and for the purpose specified.

2. In a ratchet-wrench, the. combination, with a head comprising two jaws, a fixed jaw consisting of a horizontal block-section having a stud integral with itsv upper face, an essentially T-shaped recess formed inits under faceand atoneend,andagrippingorclamping section extending` vertically down from the block-section, and a movable jaw consisting of a horizontal block-section adapted to slide in the recess of the'corresponding section of the fixed-jaw, and a downwardly-extend ing clam ping-section, and a screw held to turn in the horizontaisection of the fixed jaw, the threaded surface whereof is lit-ted to the aperture in the movable jaw, of a handle held to loosely turn upon the stud, a cap-block secured to the outer end of the stud, provided with a toothed peripheral surface, and a spring-pressed essentialiy triangular dog` pivoted upon the handle provided with two spurs adapted for engagement with the toothed surface of the capblock, as and for the purpose specified.

3. In a ratchet-wrench, the combination, with two jaws, one sliding in the other, an adjusting-screw held to loosely turn in one jaw and fitted to a threaded opening in the opposite jaw, a post projected upward from the fixed jaw, and a cap-block secured upon the upper end of the post and provided with a toothed peripheral surface, of a handle held to freely turn around the post between the jaws and the cap-block, an essentially triangular dog pivoted upon the handle provided with two spurs adapted for engagement with the toothed surface of the cap-block, and a spring-pressed bolt located in the handle and having a bearing against the dog, as and for the purpose specified.

IILLIAM II. IIAIRE.

Vitnesses:

R. F. TAYLOR, T. J. COBBLE. 

